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<h1>navo/algorithm/hash/signature/sha512.c</h1>  </div>
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<a href="sha512_8c.html">浏览该文件的文档。</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */</span>
<a name="l00011"></a>00011 <span class="preprocessor">#ifdef _MSC_VER</span>
<a name="l00012"></a>00012 <span class="preprocessor"></span><span class="preprocessor">#pragma optimize(&quot;t&quot;, on)</span>
<a name="l00013"></a>00013 <span class="preprocessor"></span><span class="preprocessor">#endif  </span><span class="comment">/* #ifdef _MSC_VER */</span>
<a name="l00014"></a>00014 
<a name="l00015"></a>00015 <span class="preprocessor">#include &quot;<a class="code" href="sha512_8h.html" title="Definitions and declarations for SHA-512.">sha512.h</a>&quot;</span>
<a name="l00016"></a>00016 
<a name="l00017"></a>00017 <span class="preprocessor">#ifdef INT64_SUPPORT</span>
<a name="l00018"></a>00018 <span class="preprocessor"></span>
<a name="l00019"></a>00019 <span class="preprocessor">#include &quot;<a class="code" href="swab_8h.html" title="Endian swap.">../../../port/swab.h</a>&quot;</span>
<a name="l00020"></a>00020 <span class="preprocessor">#include &quot;<a class="code" href="endian_8h.html" title="Definitions for byte order.">../../../port/endian.h</a>&quot;</span>
<a name="l00021"></a>00021 
<a name="l00022"></a>00022 <span class="preprocessor">#ifdef __cplusplus</span>
<a name="l00023"></a>00023 <span class="preprocessor"></span><span class="keyword">extern</span> <span class="stringliteral">&quot;C&quot;</span> {
<a name="l00024"></a>00024 <span class="preprocessor">#endif </span><span class="comment">/* #ifdef __cplusplus */</span>
<a name="l00025"></a>00025 
<a name="l00026"></a>00026 <span class="preprocessor">#define Ch(x, y, z)     ((z) ^ ((x) &amp; ((y) ^ (z))))</span>
<a name="l00027"></a>00027 <span class="preprocessor"></span><span class="preprocessor">#define Maj(x, y, z)    (((x) &amp; (y)) | ((z) &amp; ((x) | (y))))</span>
<a name="l00028"></a>00028 <span class="preprocessor"></span>
<a name="l00029"></a>00029 <span class="preprocessor">#define E0(x) (__ror64_c(x,28) ^ __ror64_c(x,34) ^ __ror64_c(x,39))</span>
<a name="l00030"></a>00030 <span class="preprocessor"></span><span class="preprocessor">#define E1(x) (__ror64_c(x,14) ^ __ror64_c(x,18) ^ __ror64_c(x,41))</span>
<a name="l00031"></a>00031 <span class="preprocessor"></span><span class="preprocessor">#define S0(x) (__ror64_c(x, 1) ^ __ror64_c(x, 8) ^ (x &gt;&gt; 7))</span>
<a name="l00032"></a>00032 <span class="preprocessor"></span><span class="preprocessor">#define S1(x) (__ror64_c(x,19) ^ __ror64_c(x,61) ^ (x &gt;&gt; 6))</span>
<a name="l00033"></a>00033 <span class="preprocessor"></span>
<a name="l00034"></a>00034 <span class="preprocessor">#define ROUND(a, b, c, d, e, f, g, h, t1, t2, I) \</span>
<a name="l00035"></a>00035 <span class="preprocessor">    (t1) = (h) + E1(e) + Ch(e, f, g) + K[(i) + (I)] + w[(i &amp; 15) + I];  \</span>
<a name="l00036"></a>00036 <span class="preprocessor">    (t2) = E0(a) + Maj(a, b, c); (d) += (t1); (h) = (t1) + (t2);</span>
<a name="l00037"></a>00037 <span class="preprocessor"></span>
<a name="l00038"></a>00038 <span class="keyword">static</span> <span class="keyword">const</span> uint64_t K[80] = {
<a name="l00039"></a>00039     UINT64_C(0x428a2f98d728ae22), UINT64_C(0x7137449123ef65cd),
<a name="l00040"></a>00040     UINT64_C(0xb5c0fbcfec4d3b2f), UINT64_C(0xe9b5dba58189dbbc),
<a name="l00041"></a>00041     UINT64_C(0x3956c25bf348b538), UINT64_C(0x59f111f1b605d019),
<a name="l00042"></a>00042     UINT64_C(0x923f82a4af194f9b), UINT64_C(0xab1c5ed5da6d8118),
<a name="l00043"></a>00043     UINT64_C(0xd807aa98a3030242), UINT64_C(0x12835b0145706fbe),
<a name="l00044"></a>00044     UINT64_C(0x243185be4ee4b28c), UINT64_C(0x550c7dc3d5ffb4e2),
<a name="l00045"></a>00045     UINT64_C(0x72be5d74f27b896f), UINT64_C(0x80deb1fe3b1696b1),
<a name="l00046"></a>00046     UINT64_C(0x9bdc06a725c71235), UINT64_C(0xc19bf174cf692694),
<a name="l00047"></a>00047     UINT64_C(0xe49b69c19ef14ad2), UINT64_C(0xefbe4786384f25e3),
<a name="l00048"></a>00048     UINT64_C(0x0fc19dc68b8cd5b5), UINT64_C(0x240ca1cc77ac9c65),
<a name="l00049"></a>00049     UINT64_C(0x2de92c6f592b0275), UINT64_C(0x4a7484aa6ea6e483),
<a name="l00050"></a>00050     UINT64_C(0x5cb0a9dcbd41fbd4), UINT64_C(0x76f988da831153b5),
<a name="l00051"></a>00051     UINT64_C(0x983e5152ee66dfab), UINT64_C(0xa831c66d2db43210),
<a name="l00052"></a>00052     UINT64_C(0xb00327c898fb213f), UINT64_C(0xbf597fc7beef0ee4),
<a name="l00053"></a>00053     UINT64_C(0xc6e00bf33da88fc2), UINT64_C(0xd5a79147930aa725),
<a name="l00054"></a>00054     UINT64_C(0x06ca6351e003826f), UINT64_C(0x142929670a0e6e70),
<a name="l00055"></a>00055     UINT64_C(0x27b70a8546d22ffc), UINT64_C(0x2e1b21385c26c926),
<a name="l00056"></a>00056     UINT64_C(0x4d2c6dfc5ac42aed), UINT64_C(0x53380d139d95b3df),
<a name="l00057"></a>00057     UINT64_C(0x650a73548baf63de), UINT64_C(0x766a0abb3c77b2a8),
<a name="l00058"></a>00058     UINT64_C(0x81c2c92e47edaee6), UINT64_C(0x92722c851482353b),
<a name="l00059"></a>00059     UINT64_C(0xa2bfe8a14cf10364), UINT64_C(0xa81a664bbc423001),
<a name="l00060"></a>00060     UINT64_C(0xc24b8b70d0f89791), UINT64_C(0xc76c51a30654be30),
<a name="l00061"></a>00061     UINT64_C(0xd192e819d6ef5218), UINT64_C(0xd69906245565a910),
<a name="l00062"></a>00062     UINT64_C(0xf40e35855771202a), UINT64_C(0x106aa07032bbd1b8),
<a name="l00063"></a>00063     UINT64_C(0x19a4c116b8d2d0c8), UINT64_C(0x1e376c085141ab53),
<a name="l00064"></a>00064     UINT64_C(0x2748774cdf8eeb99), UINT64_C(0x34b0bcb5e19b48a8),
<a name="l00065"></a>00065     UINT64_C(0x391c0cb3c5c95a63), UINT64_C(0x4ed8aa4ae3418acb),
<a name="l00066"></a>00066     UINT64_C(0x5b9cca4f7763e373), UINT64_C(0x682e6ff3d6b2b8a3),
<a name="l00067"></a>00067     UINT64_C(0x748f82ee5defb2fc), UINT64_C(0x78a5636f43172f60),
<a name="l00068"></a>00068     UINT64_C(0x84c87814a1f0ab72), UINT64_C(0x8cc702081a6439ec),
<a name="l00069"></a>00069     UINT64_C(0x90befffa23631e28), UINT64_C(0xa4506cebde82bde9),
<a name="l00070"></a>00070     UINT64_C(0xbef9a3f7b2c67915), UINT64_C(0xc67178f2e372532b),
<a name="l00071"></a>00071     UINT64_C(0xca273eceea26619c), UINT64_C(0xd186b8c721c0c207),
<a name="l00072"></a>00072     UINT64_C(0xeada7dd6cde0eb1e), UINT64_C(0xf57d4f7fee6ed178),
<a name="l00073"></a>00073     UINT64_C(0x06f067aa72176fba), UINT64_C(0x0a637dc5a2c898a6),
<a name="l00074"></a>00074     UINT64_C(0x113f9804bef90dae), UINT64_C(0x1b710b35131c471b),
<a name="l00075"></a>00075     UINT64_C(0x28db77f523047d84), UINT64_C(0x32caab7b40c72493),
<a name="l00076"></a>00076     UINT64_C(0x3c9ebe0a15c9bebc), UINT64_C(0x431d67c49c100d4c),
<a name="l00077"></a>00077     UINT64_C(0x4cc5d4becb3e42b6), UINT64_C(0x597f299cfc657e2a),
<a name="l00078"></a>00078     UINT64_C(0x5fcb6fab3ad6faec), UINT64_C(0x6c44198c4a475817)
<a name="l00079"></a>00079 };
<a name="l00080"></a>00080 
<a name="l00081"></a>00081 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> __sha512_load_op(uint64_t* w, <span class="keywordtype">int</span> i, uint64_t* in)
<a name="l00082"></a>00082 {
<a name="l00083"></a>00083     w[i] = __be64_to_cpu(in[i]);
<a name="l00084"></a>00084 }
<a name="l00085"></a>00085 
<a name="l00086"></a>00086 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> __sha512_blend_op(uint64_t* w, <span class="keywordtype">int</span> i)
<a name="l00087"></a>00087 {
<a name="l00088"></a>00088     w[i &amp; 15] += S1(w[(i - 2) &amp; 15]) + w[(i - 7) &amp; 15] + S0(w[(i - 15) &amp; 15]);
<a name="l00089"></a>00089 }
<a name="l00090"></a>00090 
<a name="l00091"></a>00091 <span class="preprocessor">#define __SHA512_LOAD_OP() while (j &lt; 16) __sha512_load_op(w, i + (j++), in)</span>
<a name="l00092"></a>00092 <span class="preprocessor"></span><span class="preprocessor">#define __SHA512_BLEND_OP() while (j &lt; 16) __sha512_blend_op(w, i + (j++))</span>
<a name="l00093"></a>00093 <span class="preprocessor"></span>
<a name="l00094"></a>00094 <span class="keyword">static</span> <span class="keywordtype">void</span> __sha512_transform(uint64_t* digest, uint64_t* in)
<a name="l00095"></a>00095 {
<a name="l00096"></a>00096     uint64_t a = digest[0];
<a name="l00097"></a>00097     uint64_t b = digest[1];
<a name="l00098"></a>00098     uint64_t c = digest[2];
<a name="l00099"></a>00099     uint64_t d = digest[3];
<a name="l00100"></a>00100     uint64_t e = digest[4];
<a name="l00101"></a>00101     uint64_t f = digest[5];
<a name="l00102"></a>00102     uint64_t g = digest[6];
<a name="l00103"></a>00103     uint64_t h = digest[7];
<a name="l00104"></a>00104     uint64_t t1, t2;
<a name="l00105"></a>00105 
<a name="l00106"></a>00106     <span class="keywordflow">do</span> {
<a name="l00107"></a>00107         uint64_t w[16];
<a name="l00108"></a>00108         <span class="keywordtype">int</span> i;
<a name="l00109"></a>00109         <span class="keywordflow">for</span> (i = 0; i &lt; 80; i += 8) {
<a name="l00110"></a>00110             <span class="keywordflow">if</span> (!(i &amp; 8)) {
<a name="l00111"></a>00111                 <span class="keywordtype">int</span> j = 0;
<a name="l00112"></a>00112 
<a name="l00113"></a>00113                 <span class="keywordflow">if</span> (i &lt; 16)
<a name="l00114"></a>00114                     __SHA512_LOAD_OP();
<a name="l00115"></a>00115                 <span class="keywordflow">else</span>
<a name="l00116"></a>00116                     __SHA512_BLEND_OP();
<a name="l00117"></a>00117             }
<a name="l00118"></a>00118 
<a name="l00119"></a>00119             ROUND(a, b, c, d, e, f, g, h, t1, t2, 0);
<a name="l00120"></a>00120             ROUND(h, a, b, c, d, e, f, g, t1, t2, 1);
<a name="l00121"></a>00121             ROUND(g, h, a, b, c, d, e, f, t1, t2, 2);
<a name="l00122"></a>00122             ROUND(f, g, h, a, b, c, d, e, t1, t2, 3);
<a name="l00123"></a>00123             ROUND(e, f, g, h, a, b, c, d, t1, t2, 4);
<a name="l00124"></a>00124             ROUND(d, e, f, g, h, a, b, c, t1, t2, 5);
<a name="l00125"></a>00125             ROUND(c, d, e, f, g, h, a, b, t1, t2, 6);
<a name="l00126"></a>00126             ROUND(b, c, d, e, f, g, h, a, t1, t2, 7);
<a name="l00127"></a>00127         }
<a name="l00128"></a>00128     } <span class="keywordflow">while</span> (0);
<a name="l00129"></a>00129 
<a name="l00130"></a>00130     digest[0] += a; digest[1] += b;
<a name="l00131"></a>00131     digest[2] += c; digest[3] += d;
<a name="l00132"></a>00132     digest[4] += e; digest[5] += f;
<a name="l00133"></a>00133     digest[6] += g; digest[7] += h;
<a name="l00134"></a>00134 
<a name="l00135"></a>00135     <span class="comment">/* 为了安全考虑，擦除内存 */</span>
<a name="l00136"></a>00136     a = 0; b = 0; c = 0; d = 0;
<a name="l00137"></a>00137     e = 0; f = 0; g = 0; h = 0;
<a name="l00138"></a>00138     t1 = 0; t2 = 0;
<a name="l00139"></a>00139 }
<a name="l00140"></a>00140 
<a name="l00141"></a>00141 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> sha512_transform(sha512_ctx* ctx)
<a name="l00142"></a>00142 {
<a name="l00143"></a>00143     __sha512_transform(ctx-&gt;digest, ctx-&gt;in);
<a name="l00144"></a>00144 }
<a name="l00145"></a>00145 
<a name="l00146"></a>00146 NV_IMPL <span class="keywordtype">void</span> __sha512_update(sha512_ctx* ctx, <a class="code" href="group___xE6_x95_xB4_xE5_x9E_x8B_xE5_xAE_x9A_xE4_xB9_x89.html#gae1affc9ca37cfb624959c866a73f83c2" title="8比特无符号整型">uint8_t</a>* buf, <span class="keywordtype">size_t</span> len)
<a name="l00147"></a>00147 {
<a name="l00148"></a>00148     uint32_t offset = (uint32_t)(ctx-&gt;cnt[0] &amp; 0x7F);
<a name="l00149"></a>00149     uint32_t space = 128 - offset;
<a name="l00150"></a>00150 
<a name="l00151"></a>00151     <span class="comment">/* 更新比特计数 */</span>
<a name="l00152"></a>00152     <span class="keywordflow">if</span> ((ctx-&gt;cnt[0] += len) &lt; len)
<a name="l00153"></a>00153         ++ctx-&gt;cnt[1];
<a name="l00154"></a>00154 
<a name="l00155"></a>00155     if (len &lt; space)
<a name="l00156"></a>00156         memcpy(ctx-&gt;in + offset, buf, len);
<a name="l00157"></a>00157     <span class="keywordflow">else</span> {
<a name="l00158"></a>00158         memcpy(ctx-&gt;in + offset, buf, space);
<a name="l00159"></a>00159         sha512_transform(ctx);
<a name="l00160"></a>00160         buf += space;
<a name="l00161"></a>00161         len -= space;
<a name="l00162"></a>00162 
<a name="l00163"></a>00163         <span class="keywordflow">while</span> (len &gt;= <span class="keyword">sizeof</span>(ctx-&gt;in)) {
<a name="l00164"></a>00164             memcpy(ctx-&gt;in, buf, <span class="keyword">sizeof</span>(ctx-&gt;in));
<a name="l00165"></a>00165             sha512_transform(ctx);
<a name="l00166"></a>00166             buf += <span class="keyword">sizeof</span>(ctx-&gt;in);
<a name="l00167"></a>00167             len -= <span class="keyword">sizeof</span>(ctx-&gt;in);
<a name="l00168"></a>00168         }
<a name="l00169"></a>00169         <span class="keywordflow">if</span> (len)
<a name="l00170"></a>00170             memcpy(ctx-&gt;in, buf, len);
<a name="l00171"></a>00171     }
<a name="l00172"></a>00172 
<a name="l00173"></a>00173     <span class="comment">/* 为了安全考虑，擦除内存 */</span>
<a name="l00174"></a>00174     offset = 0; space = 0;
<a name="l00175"></a>00175 }
<a name="l00176"></a>00176 
<a name="l00177"></a>00177 NV_IMPL <span class="keywordtype">void</span> sha512_final(sha512_ctx* ctx, <span class="keywordtype">void</span>* digest)
<a name="l00178"></a>00178 {
<a name="l00179"></a>00179     uint64_t* buf = ctx-&gt;digest;
<a name="l00180"></a>00180     <a class="code" href="group___xE6_x95_xB4_xE5_x9E_x8B_xE5_xAE_x9A_xE4_xB9_x89.html#gae1affc9ca37cfb624959c866a73f83c2" title="8比特无符号整型">uint8_t</a> padding[128] = {0x80, 0};
<a name="l00181"></a>00181     uint32_t offset = (uint32_t)(ctx-&gt;cnt[0] &amp; 0x7F);
<a name="l00182"></a>00182     uint64_t bits[2];
<a name="l00183"></a>00183     <span class="keywordtype">int</span> padlen, i;
<a name="l00184"></a>00184 
<a name="l00185"></a>00185     padlen = (112 &gt; offset)? 112 - offset: 240 - offset;
<a name="l00186"></a>00186 
<a name="l00187"></a>00187     bits[1] = __cpu_to_be64(ctx-&gt;cnt[0] &lt;&lt; 3);
<a name="l00188"></a>00188     bits[0] = __cpu_to_be64(ctx-&gt;cnt[1] &lt;&lt; 3 | ctx-&gt;cnt[0] &gt;&gt; 61);
<a name="l00189"></a>00189 
<a name="l00190"></a>00190     __sha512_update(ctx, padding, padlen);
<a name="l00191"></a>00191     sha512_update(ctx, bits, <span class="keyword">sizeof</span>(bits));
<a name="l00192"></a>00192     
<a name="l00193"></a>00193     <span class="keywordflow">for</span> (i = 0; i &lt; 8; ++i)
<a name="l00194"></a>00194         ((uint64_t*)digest)[i] = __cpu_to_be64(buf[i]);
<a name="l00195"></a>00195 
<a name="l00196"></a>00196     <span class="comment">/* 为了安全考虑，擦除内存 */</span>
<a name="l00197"></a>00197     memset(ctx, 0, <span class="keyword">sizeof</span>(sha512_ctx));
<a name="l00198"></a>00198 }
<a name="l00199"></a>00199 
<a name="l00200"></a>00200 <span class="preprocessor">#ifdef __cplusplus</span>
<a name="l00201"></a>00201 <span class="preprocessor"></span>}
<a name="l00202"></a>00202 <span class="preprocessor">#endif </span><span class="comment">/* #ifdef __cplusplus */</span>
<a name="l00203"></a>00203 
<a name="l00204"></a>00204 <span class="preprocessor">#endif </span><span class="comment">/* #ifdef INT64_SUPPORT */</span>
<a name="l00205"></a>00205 
</pre></div></div>
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<hr class="footer"/><address class="footer"><small>Generated at 2015年七月16日 星期四 12:00:37 for Navo Portable Library by&#160;
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